A056939 formatted as a triangular array:
| | | | | | | | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | | | | | | | |
| | | | | | | 1 | | 4 | | 1 | | | | | | | |
| | | | | | 1 | | 10 | | 10 | | 1 | | | | | | |
| | | | | 1 | | 20 | | 50 | | 20 | | 1 | | | | | |
| | | | 1 | | 35 | | 175 | | 175 | | 35 | | 1 | | | | |
| | | 1 | | 56 | | 490 | | 980 | | 490 | | 56 | | 1 | | | |
| | 1 | | 84 | | 1176 | | 4116 | | 4116 | | 1176 | | 84 | | 1 | | |
| 1 | | 120 | | 2520 | | 14112 | | 24696 | | 14112 | | 2520 | | 120 | | 1 | |
| 1 | | 165 | | 4950 | | 41580 | | 116424 | | 116424 | | 41580 | | 4950 | | 165 | | 1 |
A056939 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 4 | 10 | 20 | 35 | 56 | 84 | 120 | 165 | |
| 1 | 10 | 50 | 175 | 490 | 1176 | 2520 | 4950 | | |
| 1 | 20 | 175 | 980 | 4116 | 14112 | 41580 | | | |
| 1 | 35 | 490 | 4116 | 24696 | 116424 | | | | |
| 1 | 56 | 1176 | 14112 | 116424 | | | | | |
| 1 | 84 | 2520 | 41580 | | | | | | |
| 1 | 120 | 4950 | | | | | | | |
| 1 | 165 | | | | | | | | |
| 1 | | | | | | | | | |
A056939 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 4 | 10 | 20 | 35 | 56 | 84 | 120 | 165 |
| | 1 | 10 | 50 | 175 | 490 | 1176 | 2520 | 4950 |
| | | 1 | 20 | 175 | 980 | 4116 | 14112 | 41580 |
| | | | 1 | 35 | 490 | 4116 | 24696 | 116424 |
| | | | | 1 | 56 | 1176 | 14112 | 116424 |
| | | | | | 1 | 84 | 2520 | 41580 |
| | | | | | | 1 | 120 | 4950 |
| | | | | | | | 1 | 165 |
| | | | | | | | | 1 |
|
